[AR] Re: Sounding Rocket Fin Analysis

From: "Anthony Cesaroni" <anthony@xxxxxxxxxxx>
To: <arocket@xxxxxxxxxxxxx>
Date: Wed, 4 Sep 2019 14:42:42 -0400

Is LH2 considered energetic? Hazardous yes.

Anthony J. Cesaroni

President/CEO

Cesaroni Technology/Cesaroni Aerospace

<http://www.cesaronitech.com/> http://www.cesaronitech.com/

(941) 360-3100 x101 Sarasota

(905) 887-2370 x222 Toronto

From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> On Behalf
Of Carl Tedesco
Sent: Wednesday, September 4, 2019 1:11 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Sounding Rocket Fin Analysis

Craig,

Our rocket program is not allowed to store energetic materials on campus, so
no LH2 for us.

I did not video this launch, just witnessed it. Looked like some
cork-screwing going on toward the end of the burn.

Carl Tedesco

From: arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx>
<arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx> > On
Behalf Of Craig Fink
Sent: Monday, September 2, 2019 7:48 PM
To: arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx>
Subject: [AR] Re: Sounding Rocket Fin Analysis

Hi Carl,

Do you have Liquid Hydrogen on your campus?

Did you video tape this launch, just curious as to what you saw?

On Fri, Jul 12, 2019 at 2:21 PM Carl Tedesco <ctedesco@xxxxxxxxxxxxxx
<mailto:ctedesco@xxxxxxxxxxxxxx> > wrote:

Charlie,

I think I may have saw this flight if it occurred this past Saturday.

As an aerospace educator I should have a reference, but unfortunately I do
not. I have used FinSim, but cannot say with 100% certainty that it is
accurate. A quick search found this. AEROELASTIC OPTIMIZATION OF SOUNDING
ROCKET FINS <https://apps.dtic.mil/dtic/tr/fulltext/u2/a502110.pdf>
(complete with MatLab code).

I know plate fins are easier to fabricate, but I will say that I am a big
fan of tapered fits (thicker at the root than at the tip).

--- Carl

From: arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx>
<arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx> > On
Behalf Of Charlie Garcia
Sent: Thursday, July 11, 2019 2:53 PM
To: (AR) ocket List <arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx> >
Subject: [AR] Sounding Rocket Fin Analysis

Hi All!

I'm a member of a student engineering team. We recently launched a 'P' motor
powered rocket that (probably) lost a fin at about Mach 3 around 10,000 ft.
We did some analysis on the expected fin loads before flight, and added a
healthy safety factor to account for the admittedly lackluster composites
manufacturing quality control process we have in place. Our design was based
off the one that USC's Rocket Propulsion Lab recently flew to space.

We've been reading up on load analysis and design load cases for sounding
rocket fins, and we were wondering if anyone on this list has expertise or
favorite texts in this area that they'd be willing to share.

Sincerely,

Charlie Garcia

--

Craig Fink
WeBeGood@xxxxxxxxx <mailto:WeBeGood@xxxxxxxxx>

References:
- [AR] Re: Sounding Rocket Fin Analysis
  - From: Craig Fink

[AR] Re: Sounding Rocket Fin Analysis

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